How to disable the music please

Refragger

The slider won't stay minimized.

M123

You could try using Machines Loader to play the game without a CD in the drive - the game won't be able to play music if it can't find any...
You may need to copy the flics folder from each disc into the Machines install folder if you want the campaign videos to play.

If Machines Loader doesn't work for you, you could try making an ISO image of your CD and mounting that in a virtual drive instead of using your physical CD. (game will detect the CD as being in the drive, but ISO files don't store CD audio tracks)

(I think the slider issue is due to a change in how CD audio works in Windows Vista (maybe XP?) onwards - seems like CD audio volume can't be adjusted separately from overall volume anymore, so both sliders in-game do the same thing.)

Refragger

That is exactly my problem, thank you very much. I will try both steps eventually.
I want to play it on laptop at part time job. Win 7. I will burn the ISO at home.
Please check out the mod site that I am a team member on:
http://www.moddb.com/mods/ns-dmx-dkz02 Thanks again for reply.
Your first suggestion worked great, loader worked fine with my Win7. Thank you.